Synthesis of Functional Poly(disubstituted acetylene)s through the Post-Polymerization Modification Route

Amide transformation as an efficient postpolymerization modification approach for the synthesis of functional polyacetylenes

Modification of a precursor polyacetylene with various amines and alcohols through amide transformation gives access to a series of functional polymers showing nonlinear optical, luminescence, enhanced surface energy, and redox active properties.

Pyrene-Functionalized Polyacetylenes: Synthesis and Photoluminescence Property

Four pyrene-functionalized polyacetylenes were designed and prepared through a typical post-polymerization modification route, which is the highly efficient reaction between activated ester and primary anime groups. The chemical structures of the resultant polymers were characterized with multiple spectroscopic techniques and the data indicated the successful functionalization of the polyacetylenes. The introduction of the pyrene moieties into the polymer structure allowed us to investigate the interactions between the polymer backbone and side chains. For the mono-substituted polyacetylenes, both the monomer and excimer emission features of the pyrene groups could be recorded, while for the di-substituted polyacetylenes, the fluorescence from the pyrene excimer vanished and the fluorescence intensity from the pyrene monomer decreased, the fluorescence from the polymer chain predominated the emission features. The concomitant energy transfer from the pyrene monomer and excimer to poly(diphenylacetylene) backbone was associated with the underlying mechanism. In addition to the substitution modes, the linkage between the poly(diphenylacetylene) backbone and the pyrene moiety also played a significant role in the determination of the emission species. A long alkyl spacer was beneficial to the pyrene monomer emission while a short one may be helpful to the formation of the excimer and intramolecular energy transfer.

Poly(phenylene-ethynylene-alt-tetraphenylethene) copolymers: aggregation enhanced emission, induced circular dichroism, tunable surface wettability and sensitive explosive detection

Copolymer of poly(phenylene-ethynylene-alt-tetraphenylethene) were prepared via a facile route and tunable properties were realized by post-polymerization modification.

Polymerization of 1-chloro-2-benzaldehyde-acetylene using an NHC-Pd/AgOTf catalyst and post-polymerization modification

Using NHC-Pd/AgOTf complex as catalyst, we realized the polymerization of 1-chloro-2-phenylacetylene derivative, which bears an electron-withdrawing aldehyde group for the subsequent post-polymerization modification.

A novel post-polymerization modification route to functional poly(disubstituted acetylenes) through phenol–yne click reaction

This work not only enriches the precursor species for the synthesis of functional poly(disubstituted acetylenes) but also adds a powerful tool to the tool box for the preparation of other functional polymers through the post-polymerization modification route.

Different amine-functionalized poly(diphenylsubstituted acetylenes) from the same precursor

A facile and efficient synthetic route to different amine functionalized poly(diphenyl-substituted acetylenes) from the same precursor polymer is reported. The derived polymers demonstrated versatile applications.

A throughway to functional poly(disubstituted acetylenes): a combination of the activated ester strategy with click reaction

We report a facile and efficient synthetic route to functional poly(disubstituted acetylenes) by the combination of the activated ester strategy with alkyne–azide click reaction.